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Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Tax [Line Items]        
Effective tax rate 2.24% (24.92%) 23.11%  
Impairment charges related to Goodwill $ 12,500,000 $ 17,800,000    
Deferred Tax Assets, Capital Loss Carryforwards 412,392,000 422,809,000    
Expiring Capital Loss Carryforwards Current Year Increase 6,400,000      
Income tax expense for excess tax deficiencies 1,800,000 1,900,000 $ 1,100,000  
Net operating loss carryforwards for federal and state tax $ 72,300,000 56,400,000 46,700,000  
Expiration period of operating loss carryforwards 2025      
Operating loss carryforwards subject to expiration $ 13,500,000      
Expiring Capital Loss Carryforwards 16,900,000      
Operating loss carryforwards not subject to expiration 58,800,000      
Uncertain tax position liability 2,402,000 2,449,000 2,838,000 $ 4,928,000
Unrecognized tax benefits that would impact effective tax rate 2,400,000      
Increase (decrease) in uncertain tax position   600,000    
Company's accrued liability for interest and penalties related to income tax liabilities $ 500,000 300,000    
Federal and state income tax examinations 2023      
Net deferred tax assets $ 69,609,000 68,544,000    
Capital losses incurred 10,400      
Capital loss carryforwards 1,670,000,000      
Income Tax , Penalties and Interest Expense $ 300,000 $ 200,000 $ 300,000  
Federal tax rate 21.00% 21.00% 21.00%  
Increase in net deferred tax assets $ 1,100,000      
Increase Decrease In Uncollectible Accounts 17,300,000      
Increase Decrease In Reserves And Accruals 8,900,000      
Increase decrease in valuation allowance 10,500,000      
Increase Decrease In operating and other loss carryforwards 13,100,000      
Increase Decrease In other items 4,600,000      
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount $ 10,500,000      
Latest Tax Year [Member]        
Income Tax [Line Items]        
Increase (decrease) in uncertain tax position   $ 400,000    
Minimum [Member]        
Income Tax [Line Items]        
Expiration period of operating loss carryforwards 2033      
Maximum [Member]        
Income Tax [Line Items]        
Expiration period of operating loss carryforwards 2042